I used Peggy for the day-of planning. I just needed someone to assist me the day before and the day of my wedding to be sure everything ran smoothly. Peggy was fantastic. She let me keep all of my stuff in her house before the wedding, and she transported it to the reception location. She brought me breakfast to my hotel room the morning of the wedding, and most importantly, she was an organized and calming presence.
Peggy was worth every penny day of, but I wish I had left more to her in the months beforehand (like vendor research and whatnot). I ended up doing a lot of that myself and tweaking out a bit.
Day of, she had everything under control, and I didn't have to think about a thing! Additionally, she got all our stuff for the welcome bags for us, got a great rate on flower petals, decorated our reception spot, coordinated with all of our vendors, and more. At the end of the night, she even helped get taxis for all of my guests to get home.